Weekly digest
Week of 20 April 2026
60 of 69 listed below
69 new roles this week across 24 companies; the biggest movers: Mach Industries (+18), OpenAI (+13), Anthropic (+8).
Research
- Member of Technical Staff (Research / Engineering) — Ineffable Intelligence Ineffable Intelligence is making first contact with superintelligence
- Anthropic Fellows Program, The Anthropic Institute (Economics & Policy) — Anthropic Develops Claude, an AI assistant, with research focused on AI safety and alignment
- Research Engineer, Machine Learning (RL Velocity) — Anthropic
- Research Engineer, Machine Learning (RL Velocity) — Anthropic
ML engineering
- Member of Technical Staff - ML Performance — Modal Modal is a cloud-based serverless computing platform designed for data science and machine learning teams
- Software Engineer - Voice AI (Inference Runtime) — Baseten Platform for deploying and serving machine learning models with high-performance inference at scale
- Software Engineer, Inference - Performance Optimization — OpenAI Develops AI systems including large language models like ChatGPT for research and commercial use
Applied AI
- Technical Account Manager — Cartesia Real-time speech and transcription models for voice agents with low-latency State Space Model architecture
- Forward Deployed Engineer - LLM Post-training — Reflection AI Builds open AI models that enable anyone to control and shape intelligent systems
- Forward Deployed Engineer - Singapore — OpenAI
- Software Engineer, Applied AI - Frontier Engineering — Mercor Marketplace connecting domain experts with AI companies for task evaluation and model benchmarking
Infrastructure
- Member of Technical Staff — Reliability-CI Infrastructure — RadixArk Builds open-source inference and training infrastructure systems for AI applications
- Performance Modeling Lead — OpenAI
- Performance Modeling Engineer ~2 — OpenAI
- Senior Software Engineer, Infrastructure & Simulation — Mach Industries Develops low-cost autonomous aerospace and defense systems including drones, munitions, and propulsion compone
- Security Engineer - Threat Intel — Anthropic
- Infrastructure Security Engineer — Modal
- Deployed Infrastructure Engineer — Sierra Conversational AI platform that deploys customized agents across chat, voice, email, and SMS for customer supp
- 3P Systems Architect — OpenAI
- Data Center Controls Network Engineer — OpenAI
- Performance Modeling Engineer — OpenAI
- Software Engineer, ChatGPT Infrastructure — OpenAI
- Workload Porting & Performance Engineer — OpenAI
Software
- Member of Technical Staff (Software Engineer, Computer) — Perplexity AI-powered answer engine that provides conversational, source-backed responses to user queries
- Member of Technical Staff (Software Engineer, Monetization) — Perplexity
- Sr. Member of Technical Staff — WithCoverage Digital platform for managing insurance policies, claims, and risk for CPG brands and growing businesses
- Engineering Manager, Multimodal (API) — OpenAI
- Software Engineer, Enterprise — OpenRouter Unified API gateway providing access to 500+ AI models across 80+ providers with intelligent routing
- Software Engineer, Platform — OpenRouter
- Software Engineer, Platform — Mercor
- Backend Engineer - API — xAI Develops Grok, an AI platform offering reasoning, code, voice, image, and video capabilities through a unified
- Autonomy and Robotics Software Engineer — Mach Industries
- Flight Software Engineer — Mach Industries
- Software Engineer — Mach Industries
Hardware
- Construction Manager, Mechanical - Memphis — xAI
- Engineering Design Manager — Mariana Minerals Software-first developer and operator of critical mineral projects for energy, AI, and defense
- Senior Firmware Engineer, Vehicle — K2 Space Builds high-power satellite buses designed for LEO, MEO, and GEO missions with 10x more power than constellati
- Senior Electrical Engineer — Mach Industries
- Aerodynamicist — Mach Industries
- Build Engineer — Mach Industries
- Composites Design Engineer — Mach Industries
- Controls Engineer — Mach Industries
- Electrical Engineer — Mach Industries
- Firmware Engineer — Mach Industries
- Firmware Validation Engineer — Mach Industries
- Mechanical Engineer — Mach Industries
Product
Go-to-market
Operations
- Director, Compute & Infrastructure FP&A — OpenAI
- COMSEC Manager (CRO) (TS//SCI) — K2 Space
- Head of People — Periodic Labs Builds AI scientists and autonomous laboratories to accelerate discovery in physical sciences
- EMEA Deal Strategy & Operations Lead — LangChain Framework and platform for building, testing, deploying, and monitoring LLM-powered agents
- CPU/Storage/PoP-WAN Program Manager — OpenAI
- Data Center Infrastructure Engineering Program Manager (Network and Whitespace) — OpenAI
- Information Systems Security Manager (TS//SCI) — K2 Space
- Revenue Strategy & Operations — Anthropic
- Controller — Crosby AI-powered contract review for MSAs, DPAs, and NDAs with lawyer oversight and fixed pricing
Other
- Audio Engineering (Freelance) — ElevenLabs AI platform generating realistic speech, music, and sound effects across 70+ languages
Every line links to the role on Liftoff Jobs, and from there to the company's own board. · Past issues · Search the whole index
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